Multiple choice

Some of the growth regulators affect stomatal opening. Closure of stomata is brought about by

  1. indole butyric acid

  2. abscisic acid

  3. kinetin

  4. gibberellic acid

  5. all of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Some of the growth regulators affect stomatal opening. Closure of stomata is brought about by abscisic acid.

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